#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
void swap(int* pa, int* pb)
{
	int t = *pa;
	*pa = *pb;
	*pb = t;
}
int main()
{
	int a = 5, b = 6;
	swap(&a, &b);
	printf("%d %d",a,b);
}